/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:25:53,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:25:53,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:25:53,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:25:53,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:25:53,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:25:53,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:25:53,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:25:53,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:25:53,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:25:53,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:25:53,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:25:53,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:25:53,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:25:53,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:25:53,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:25:53,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:25:53,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:25:53,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:25:53,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:25:53,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:25:53,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:25:53,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:25:53,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:25:53,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:25:53,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:25:53,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:25:53,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:25:53,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:25:53,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:25:53,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:25:53,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:25:53,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:25:53,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:25:53,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:25:53,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:25:53,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:25:53,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:25:53,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:25:53,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:25:53,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:25:53,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:25:53,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:25:53,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:25:53,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:25:53,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:25:53,498 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:25:53,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:25:53,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:25:53,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:25:53,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:25:53,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:25:53,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:25:53,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:25:53,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:25:53,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:25:53,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:25:53,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:25:53,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:25:53,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:25:53,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:25:53,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:25:53,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:25:53,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:25:53,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:25:53,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:25:53,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:25:53,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:25:53,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:25:53,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:25:54,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:25:54,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:25:54,002 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:25:54,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2020-12-22 15:25:54,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28288ac06/eabd6d7f85c54a2e91056ebd6b5e36be/FLAGbdb64236c [2020-12-22 15:25:55,235 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:25:55,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2020-12-22 15:25:55,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28288ac06/eabd6d7f85c54a2e91056ebd6b5e36be/FLAGbdb64236c [2020-12-22 15:25:55,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28288ac06/eabd6d7f85c54a2e91056ebd6b5e36be [2020-12-22 15:25:55,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:25:55,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:25:55,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:25:55,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:25:55,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:25:55,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:25:55" (1/1) ... [2020-12-22 15:25:55,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be0d1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:25:55, skipping insertion in model container [2020-12-22 15:25:55,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:25:55" (1/1) ... [2020-12-22 15:25:55,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:25:55,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:25:59,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2020-12-22 15:25:59,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2020-12-22 15:25:59,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:25:59,660 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:26:00,174 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2020-12-22 15:26:00,175 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2020-12-22 15:26:00,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:26:01,116 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:26:01,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01 WrapperNode [2020-12-22 15:26:01,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:26:01,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:26:01,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:26:01,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:26:01,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:01,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:05,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:26:05,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:26:05,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:26:05,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:26:05,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:05,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:07,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:07,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:09,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:10,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:10,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... [2020-12-22 15:26:12,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:26:12,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:26:12,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:26:12,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:26:12,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:26:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 15:26:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:26:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:26:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:26:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:26:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:26:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:26:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:26:12,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:26:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:26:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:26:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:26:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:26:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:27:52,437 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 15:27:52,438 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 15:27:52,439 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 15:27:52,440 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:27:52,449 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:27:52,450 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:27:52,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:27:52,537 INFO L299 CfgBuilder]: Removed 17746 assume(true) statements. [2020-12-22 15:27:52,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:27:52 BoogieIcfgContainer [2020-12-22 15:27:52,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:27:52,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:27:52,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:27:52,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:27:52,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:25:55" (1/3) ... [2020-12-22 15:27:52,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5277c17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:27:52, skipping insertion in model container [2020-12-22 15:27:52,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:26:01" (2/3) ... [2020-12-22 15:27:52,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5277c17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:27:52, skipping insertion in model container [2020-12-22 15:27:52,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:27:52" (3/3) ... [2020-12-22 15:27:52,563 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2020-12-22 15:27:52,570 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:27:52,580 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 15:27:52,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 15:27:52,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:27:52,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:27:52,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:27:52,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:27:52,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:27:52,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:27:52,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:27:52,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:27:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15629 states. [2020-12-22 15:27:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 15:27:52,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:27:52,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:27:52,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:27:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:27:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2079197412, now seen corresponding path program 1 times [2020-12-22 15:27:52,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:27:52,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10898454] [2020-12-22 15:27:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:27:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:27:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:27:54,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10898454] [2020-12-22 15:27:54,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:27:54,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:27:54,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513771587] [2020-12-22 15:27:54,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:27:54,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:27:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:27:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:27:54,033 INFO L87 Difference]: Start difference. First operand 15629 states. Second operand 3 states. [2020-12-22 15:27:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:27:57,241 INFO L93 Difference]: Finished difference Result 33576 states and 46071 transitions. [2020-12-22 15:27:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:27:57,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 15:27:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:27:57,376 INFO L225 Difference]: With dead ends: 33576 [2020-12-22 15:27:57,377 INFO L226 Difference]: Without dead ends: 17353 [2020-12-22 15:27:57,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:27:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17353 states. [2020-12-22 15:27:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17353 to 17347. [2020-12-22 15:27:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17347 states. [2020-12-22 15:27:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17347 states to 17347 states and 23365 transitions. [2020-12-22 15:27:58,479 INFO L78 Accepts]: Start accepts. Automaton has 17347 states and 23365 transitions. Word has length 73 [2020-12-22 15:27:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:27:58,481 INFO L481 AbstractCegarLoop]: Abstraction has 17347 states and 23365 transitions. [2020-12-22 15:27:58,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:27:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 17347 states and 23365 transitions. [2020-12-22 15:27:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 15:27:58,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:27:58,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:27:58,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:27:58,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:27:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:27:58,496 INFO L82 PathProgramCache]: Analyzing trace with hash 608842088, now seen corresponding path program 1 times [2020-12-22 15:27:58,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:27:58,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641044049] [2020-12-22 15:27:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:27:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:27:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:27:58,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641044049] [2020-12-22 15:27:58,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:27:58,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:27:58,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397683742] [2020-12-22 15:27:58,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:27:58,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:27:58,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:27:58,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:27:58,946 INFO L87 Difference]: Start difference. First operand 17347 states and 23365 transitions. Second operand 3 states. [2020-12-22 15:28:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:02,468 INFO L93 Difference]: Finished difference Result 47394 states and 63861 transitions. [2020-12-22 15:28:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:02,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 15:28:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:02,600 INFO L225 Difference]: With dead ends: 47394 [2020-12-22 15:28:02,601 INFO L226 Difference]: Without dead ends: 30115 [2020-12-22 15:28:02,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30115 states. [2020-12-22 15:28:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30115 to 28602. [2020-12-22 15:28:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28602 states. [2020-12-22 15:28:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28602 states to 28602 states and 38539 transitions. [2020-12-22 15:28:03,656 INFO L78 Accepts]: Start accepts. Automaton has 28602 states and 38539 transitions. Word has length 84 [2020-12-22 15:28:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:03,657 INFO L481 AbstractCegarLoop]: Abstraction has 28602 states and 38539 transitions. [2020-12-22 15:28:03,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28602 states and 38539 transitions. [2020-12-22 15:28:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 15:28:03,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:03,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:03,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:28:03,663 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash 629054439, now seen corresponding path program 1 times [2020-12-22 15:28:03,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:03,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231478367] [2020-12-22 15:28:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:28:04,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231478367] [2020-12-22 15:28:04,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:04,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:04,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044255034] [2020-12-22 15:28:04,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:04,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:04,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:04,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:04,091 INFO L87 Difference]: Start difference. First operand 28602 states and 38539 transitions. Second operand 3 states. [2020-12-22 15:28:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:07,661 INFO L93 Difference]: Finished difference Result 59527 states and 80239 transitions. [2020-12-22 15:28:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:07,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 15:28:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:07,748 INFO L225 Difference]: With dead ends: 59527 [2020-12-22 15:28:07,749 INFO L226 Difference]: Without dead ends: 30993 [2020-12-22 15:28:07,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2020-12-22 15:28:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 30983. [2020-12-22 15:28:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30983 states. [2020-12-22 15:28:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30983 states to 30983 states and 41739 transitions. [2020-12-22 15:28:08,759 INFO L78 Accepts]: Start accepts. Automaton has 30983 states and 41739 transitions. Word has length 101 [2020-12-22 15:28:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:08,761 INFO L481 AbstractCegarLoop]: Abstraction has 30983 states and 41739 transitions. [2020-12-22 15:28:08,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30983 states and 41739 transitions. [2020-12-22 15:28:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 15:28:08,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:08,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:08,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:28:08,772 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:08,773 INFO L82 PathProgramCache]: Analyzing trace with hash -658095963, now seen corresponding path program 1 times [2020-12-22 15:28:08,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:08,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417862138] [2020-12-22 15:28:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417862138] [2020-12-22 15:28:09,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:09,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221207427] [2020-12-22 15:28:09,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:09,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:09,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:09,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:09,158 INFO L87 Difference]: Start difference. First operand 30983 states and 41739 transitions. Second operand 3 states. [2020-12-22 15:28:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:12,315 INFO L93 Difference]: Finished difference Result 64279 states and 86619 transitions. [2020-12-22 15:28:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:12,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 15:28:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:12,401 INFO L225 Difference]: With dead ends: 64279 [2020-12-22 15:28:12,402 INFO L226 Difference]: Without dead ends: 33364 [2020-12-22 15:28:12,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33364 states. [2020-12-22 15:28:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33364 to 33354. [2020-12-22 15:28:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33354 states. [2020-12-22 15:28:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33354 states to 33354 states and 44925 transitions. [2020-12-22 15:28:13,356 INFO L78 Accepts]: Start accepts. Automaton has 33354 states and 44925 transitions. Word has length 138 [2020-12-22 15:28:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:13,357 INFO L481 AbstractCegarLoop]: Abstraction has 33354 states and 44925 transitions. [2020-12-22 15:28:13,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33354 states and 44925 transitions. [2020-12-22 15:28:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 15:28:13,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:13,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:13,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:28:13,363 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1270176739, now seen corresponding path program 1 times [2020-12-22 15:28:13,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:13,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737020128] [2020-12-22 15:28:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:13,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737020128] [2020-12-22 15:28:13,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:13,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:13,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839562403] [2020-12-22 15:28:13,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:13,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:13,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:13,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:13,869 INFO L87 Difference]: Start difference. First operand 33354 states and 44925 transitions. Second operand 3 states. [2020-12-22 15:28:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:17,052 INFO L93 Difference]: Finished difference Result 69027 states and 93003 transitions. [2020-12-22 15:28:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:17,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 15:28:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:17,137 INFO L225 Difference]: With dead ends: 69027 [2020-12-22 15:28:17,137 INFO L226 Difference]: Without dead ends: 35741 [2020-12-22 15:28:17,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35741 states. [2020-12-22 15:28:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35741 to 35731. [2020-12-22 15:28:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35731 states. [2020-12-22 15:28:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35731 states to 35731 states and 48117 transitions. [2020-12-22 15:28:18,360 INFO L78 Accepts]: Start accepts. Automaton has 35731 states and 48117 transitions. Word has length 138 [2020-12-22 15:28:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:18,362 INFO L481 AbstractCegarLoop]: Abstraction has 35731 states and 48117 transitions. [2020-12-22 15:28:18,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 35731 states and 48117 transitions. [2020-12-22 15:28:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 15:28:18,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:18,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:18,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:28:18,367 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash -869442390, now seen corresponding path program 1 times [2020-12-22 15:28:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514540472] [2020-12-22 15:28:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:28:18,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514540472] [2020-12-22 15:28:18,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:18,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:18,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084118143] [2020-12-22 15:28:18,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:18,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:18,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:18,779 INFO L87 Difference]: Start difference. First operand 35731 states and 48117 transitions. Second operand 3 states. [2020-12-22 15:28:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:22,037 INFO L93 Difference]: Finished difference Result 73777 states and 99379 transitions. [2020-12-22 15:28:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:22,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-22 15:28:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:22,124 INFO L225 Difference]: With dead ends: 73777 [2020-12-22 15:28:22,124 INFO L226 Difference]: Without dead ends: 38114 [2020-12-22 15:28:22,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38114 states. [2020-12-22 15:28:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38114 to 38104. [2020-12-22 15:28:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38104 states. [2020-12-22 15:28:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38104 states to 38104 states and 51305 transitions. [2020-12-22 15:28:23,257 INFO L78 Accepts]: Start accepts. Automaton has 38104 states and 51305 transitions. Word has length 183 [2020-12-22 15:28:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:23,258 INFO L481 AbstractCegarLoop]: Abstraction has 38104 states and 51305 transitions. [2020-12-22 15:28:23,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 38104 states and 51305 transitions. [2020-12-22 15:28:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 15:28:23,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:23,271 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:23,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:28:23,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:23,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1058830312, now seen corresponding path program 1 times [2020-12-22 15:28:23,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:23,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751327552] [2020-12-22 15:28:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:28:23,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751327552] [2020-12-22 15:28:23,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:23,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:23,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424600293] [2020-12-22 15:28:23,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:23,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:23,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:23,818 INFO L87 Difference]: Start difference. First operand 38104 states and 51305 transitions. Second operand 3 states. [2020-12-22 15:28:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:26,844 INFO L93 Difference]: Finished difference Result 78525 states and 105759 transitions. [2020-12-22 15:28:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:26,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-22 15:28:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:26,925 INFO L225 Difference]: With dead ends: 78525 [2020-12-22 15:28:26,925 INFO L226 Difference]: Without dead ends: 40489 [2020-12-22 15:28:26,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40489 states. [2020-12-22 15:28:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40489 to 40479. [2020-12-22 15:28:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40479 states. [2020-12-22 15:28:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40479 states to 40479 states and 54495 transitions. [2020-12-22 15:28:28,178 INFO L78 Accepts]: Start accepts. Automaton has 40479 states and 54495 transitions. Word has length 183 [2020-12-22 15:28:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:28,179 INFO L481 AbstractCegarLoop]: Abstraction has 40479 states and 54495 transitions. [2020-12-22 15:28:28,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40479 states and 54495 transitions. [2020-12-22 15:28:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-22 15:28:28,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:28,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:28,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:28:28,185 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1484080607, now seen corresponding path program 1 times [2020-12-22 15:28:28,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:28,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818356028] [2020-12-22 15:28:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:28:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818356028] [2020-12-22 15:28:28,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:28,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:28:28,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111825454] [2020-12-22 15:28:28,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:28:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:28:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:28:28,700 INFO L87 Difference]: Start difference. First operand 40479 states and 54495 transitions. Second operand 4 states. [2020-12-22 15:28:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:33,349 INFO L93 Difference]: Finished difference Result 123624 states and 166464 transitions. [2020-12-22 15:28:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:28:33,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-12-22 15:28:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:33,483 INFO L225 Difference]: With dead ends: 123624 [2020-12-22 15:28:33,483 INFO L226 Difference]: Without dead ends: 83213 [2020-12-22 15:28:33,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:28:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83213 states. [2020-12-22 15:28:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83213 to 42840. [2020-12-22 15:28:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42840 states. [2020-12-22 15:28:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42840 states to 42840 states and 57671 transitions. [2020-12-22 15:28:35,054 INFO L78 Accepts]: Start accepts. Automaton has 42840 states and 57671 transitions. Word has length 210 [2020-12-22 15:28:35,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:35,054 INFO L481 AbstractCegarLoop]: Abstraction has 42840 states and 57671 transitions. [2020-12-22 15:28:35,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:28:35,054 INFO L276 IsEmpty]: Start isEmpty. Operand 42840 states and 57671 transitions. [2020-12-22 15:28:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 15:28:35,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:35,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:35,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:28:35,060 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:35,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2140552918, now seen corresponding path program 1 times [2020-12-22 15:28:35,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:35,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886014034] [2020-12-22 15:28:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:28:35,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886014034] [2020-12-22 15:28:35,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:35,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:28:35,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189131387] [2020-12-22 15:28:35,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:28:35,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:35,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:28:35,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:28:35,406 INFO L87 Difference]: Start difference. First operand 42840 states and 57671 transitions. Second operand 4 states. [2020-12-22 15:28:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:40,145 INFO L93 Difference]: Finished difference Result 128356 states and 172836 transitions. [2020-12-22 15:28:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:28:40,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2020-12-22 15:28:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:40,287 INFO L225 Difference]: With dead ends: 128356 [2020-12-22 15:28:40,287 INFO L226 Difference]: Without dead ends: 85584 [2020-12-22 15:28:40,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:28:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85584 states. [2020-12-22 15:28:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85584 to 45211. [2020-12-22 15:28:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45211 states. [2020-12-22 15:28:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45211 states to 45211 states and 60857 transitions. [2020-12-22 15:28:42,054 INFO L78 Accepts]: Start accepts. Automaton has 45211 states and 60857 transitions. Word has length 211 [2020-12-22 15:28:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:42,055 INFO L481 AbstractCegarLoop]: Abstraction has 45211 states and 60857 transitions. [2020-12-22 15:28:42,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:28:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 45211 states and 60857 transitions. [2020-12-22 15:28:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-12-22 15:28:42,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:42,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:42,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:28:42,061 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1539296608, now seen corresponding path program 1 times [2020-12-22 15:28:42,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:42,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98170415] [2020-12-22 15:28:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:28:42,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98170415] [2020-12-22 15:28:42,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:42,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:28:42,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688069880] [2020-12-22 15:28:42,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:28:42,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:42,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:28:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:28:42,400 INFO L87 Difference]: Start difference. First operand 45211 states and 60857 transitions. Second operand 4 states. [2020-12-22 15:28:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:47,382 INFO L93 Difference]: Finished difference Result 133096 states and 179210 transitions. [2020-12-22 15:28:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:28:47,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-12-22 15:28:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:47,527 INFO L225 Difference]: With dead ends: 133096 [2020-12-22 15:28:47,527 INFO L226 Difference]: Without dead ends: 87953 [2020-12-22 15:28:47,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:28:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87953 states. [2020-12-22 15:28:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87953 to 47580. [2020-12-22 15:28:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47580 states. [2020-12-22 15:28:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47580 states to 47580 states and 64041 transitions. [2020-12-22 15:28:49,511 INFO L78 Accepts]: Start accepts. Automaton has 47580 states and 64041 transitions. Word has length 212 [2020-12-22 15:28:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:49,511 INFO L481 AbstractCegarLoop]: Abstraction has 47580 states and 64041 transitions. [2020-12-22 15:28:49,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:28:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 47580 states and 64041 transitions. [2020-12-22 15:28:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 15:28:49,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:49,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:49,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:28:49,517 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 224388048, now seen corresponding path program 1 times [2020-12-22 15:28:49,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:49,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490985697] [2020-12-22 15:28:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 15:28:50,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490985697] [2020-12-22 15:28:50,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:50,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:50,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817452783] [2020-12-22 15:28:50,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:50,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:50,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:50,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:50,029 INFO L87 Difference]: Start difference. First operand 47580 states and 64041 transitions. Second operand 3 states. [2020-12-22 15:28:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:53,534 INFO L93 Difference]: Finished difference Result 126276 states and 169905 transitions. [2020-12-22 15:28:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:53,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 15:28:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:53,654 INFO L225 Difference]: With dead ends: 126276 [2020-12-22 15:28:53,654 INFO L226 Difference]: Without dead ends: 78764 [2020-12-22 15:28:53,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78764 states. [2020-12-22 15:28:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78764 to 48382. [2020-12-22 15:28:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48382 states. [2020-12-22 15:28:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48382 states to 48382 states and 64839 transitions. [2020-12-22 15:28:55,729 INFO L78 Accepts]: Start accepts. Automaton has 48382 states and 64839 transitions. Word has length 213 [2020-12-22 15:28:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:55,729 INFO L481 AbstractCegarLoop]: Abstraction has 48382 states and 64839 transitions. [2020-12-22 15:28:55,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 48382 states and 64839 transitions. [2020-12-22 15:28:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-12-22 15:28:55,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:55,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:55,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 15:28:55,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1063223655, now seen corresponding path program 1 times [2020-12-22 15:28:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:55,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449683096] [2020-12-22 15:28:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 15:28:56,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449683096] [2020-12-22 15:28:56,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:56,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:28:56,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298360983] [2020-12-22 15:28:56,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:28:56,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:28:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:28:56,300 INFO L87 Difference]: Start difference. First operand 48382 states and 64839 transitions. Second operand 4 states. [2020-12-22 15:29:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:02,354 INFO L93 Difference]: Finished difference Result 173654 states and 233074 transitions. [2020-12-22 15:29:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:29:02,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-12-22 15:29:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:02,591 INFO L225 Difference]: With dead ends: 173654 [2020-12-22 15:29:02,592 INFO L226 Difference]: Without dead ends: 125340 [2020-12-22 15:29:02,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:29:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125340 states. [2020-12-22 15:29:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125340 to 48460. [2020-12-22 15:29:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48460 states. [2020-12-22 15:29:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48460 states to 48460 states and 64917 transitions. [2020-12-22 15:29:05,394 INFO L78 Accepts]: Start accepts. Automaton has 48460 states and 64917 transitions. Word has length 214 [2020-12-22 15:29:05,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:05,394 INFO L481 AbstractCegarLoop]: Abstraction has 48460 states and 64917 transitions. [2020-12-22 15:29:05,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:29:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 48460 states and 64917 transitions. [2020-12-22 15:29:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 15:29:05,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:05,400 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:05,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 15:29:05,400 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1052780672, now seen corresponding path program 1 times [2020-12-22 15:29:05,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:05,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877244886] [2020-12-22 15:29:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 15:29:05,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877244886] [2020-12-22 15:29:05,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:05,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:05,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900347392] [2020-12-22 15:29:05,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:05,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:05,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:05,747 INFO L87 Difference]: Start difference. First operand 48460 states and 64917 transitions. Second operand 3 states. [2020-12-22 15:29:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:11,462 INFO L93 Difference]: Finished difference Result 96904 states and 129862 transitions. [2020-12-22 15:29:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:11,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 15:29:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:11,531 INFO L225 Difference]: With dead ends: 96904 [2020-12-22 15:29:11,531 INFO L226 Difference]: Without dead ends: 48512 [2020-12-22 15:29:11,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48512 states. [2020-12-22 15:29:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48512 to 48512. [2020-12-22 15:29:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48512 states. [2020-12-22 15:29:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48512 states to 48512 states and 64969 transitions. [2020-12-22 15:29:13,777 INFO L78 Accepts]: Start accepts. Automaton has 48512 states and 64969 transitions. Word has length 217 [2020-12-22 15:29:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:13,778 INFO L481 AbstractCegarLoop]: Abstraction has 48512 states and 64969 transitions. [2020-12-22 15:29:13,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 48512 states and 64969 transitions. [2020-12-22 15:29:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 15:29:13,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:13,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:13,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 15:29:13,783 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash -822121498, now seen corresponding path program 1 times [2020-12-22 15:29:13,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:13,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585270718] [2020-12-22 15:29:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:14,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585270718] [2020-12-22 15:29:14,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:14,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:29:14,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518458950] [2020-12-22 15:29:14,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:29:14,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:29:14,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:14,316 INFO L87 Difference]: Start difference. First operand 48512 states and 64969 transitions. Second operand 5 states.